Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W1EFK callsign genealogy
Currently held by LAWRENCE, DAVID L
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W1EFK's current licensee, walking backwards.
- LAWRENCE, DAVID LNHgranted 1997-03-26cancelled 2002-03-20
Successor callsigns
Callsigns held now by people who previously held W1EFK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W1EFK, oldest first.
- LAWRENCE, CLEON L FL1988-01-19 → cancelled 2000-01-20
- LAWRENCE, DAVID L NH2022-02-23 active